Novel Non-Target Analysis for Fluorine Compounds Using ICPMS/MS and HPLC-ICPMS/MS

Nor Laili A. Jamari, J. Frederik Dohmann, Andrea Raab, Eva M. Krupp, Jorg Feldmann

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Abstract

Measuring sub ppm levels of fluorine (F) directly with an commercial ICPMS is not possible due to high ionisation potential of F. Mixing of barium and fluorine solution enabled a new approach in fluorine analysis through the formation of the polyatomic ion BaF+ using ICPMS/MS. Different parameters such as reaction gas flow rate, sampling position, carrier and make up gas flow rate, waiting and acquisition time as well as RF power were optimized in order to obtain the highest possible sensitivities for 138Ba19F+, as those parameters were important for polyatomic ion formation, avoiding barium oxide and barium hydroxide ions interference and sensitive detection in MS/MS. A limit of detection (LOD) of 0.043 mg L-1 was achieved with a good recovery of fluoride spiked in deionised water. For fluorine speciation analysis, coupling of anion exchange chromatography online to ICPMS/MS allowed separation and fluorine specific detection of fluoride and fluoroacetate. The response was compound independent as expected for ICPMS. The LOD for fluoride and fluoroacetate were 0.022 mg L-1 and 0.11 mg L-1 respectively. Both compounds were baseline separated and detected quantitatively, making this newly developed method a promising candidate for non-target fluorine speciation analysis in environmental samples.
Original languageEnglish
Pages (from-to)942-950
Number of pages9
JournalJournal of Analytical Atomic Spectrometry
Volume32
Issue number5
Early online date6 Apr 2017
DOIs
Publication statusPublished - 1 May 2017

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Fluorine Compounds
Fluorine
Fluoroacetates
Fluorides
Flow of gases
Flow rate
Ions
Ionization potential
Deionized water
Barium
Chromatography
Anions
Ion exchange
Sampling
Recovery

Cite this

Novel Non-Target Analysis for Fluorine Compounds Using ICPMS/MS and HPLC-ICPMS/MS. / Jamari, Nor Laili A.; Dohmann, J. Frederik ; Raab, Andrea; Krupp, Eva M.; Feldmann, Jorg.

In: Journal of Analytical Atomic Spectrometry, Vol. 32, No. 5, 01.05.2017, p. 942-950 .

Research output: Contribution to journalArticle

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abstract = "Measuring sub ppm levels of fluorine (F) directly with an commercial ICPMS is not possible due to high ionisation potential of F. Mixing of barium and fluorine solution enabled a new approach in fluorine analysis through the formation of the polyatomic ion BaF+ using ICPMS/MS. Different parameters such as reaction gas flow rate, sampling position, carrier and make up gas flow rate, waiting and acquisition time as well as RF power were optimized in order to obtain the highest possible sensitivities for 138Ba19F+, as those parameters were important for polyatomic ion formation, avoiding barium oxide and barium hydroxide ions interference and sensitive detection in MS/MS. A limit of detection (LOD) of 0.043 mg L-1 was achieved with a good recovery of fluoride spiked in deionised water. For fluorine speciation analysis, coupling of anion exchange chromatography online to ICPMS/MS allowed separation and fluorine specific detection of fluoride and fluoroacetate. The response was compound independent as expected for ICPMS. The LOD for fluoride and fluoroacetate were 0.022 mg L-1 and 0.11 mg L-1 respectively. Both compounds were baseline separated and detected quantitatively, making this newly developed method a promising candidate for non-target fluorine speciation analysis in environmental samples.",
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